A line on a sphere that cuts all meridians at the same angle

• The path taken by a ship or plane that maintains a constant compass direction

Wiktionary Word definitions in Wiktionary
n. 1 (context mathematics English) A line on a surface (such as the Earth) that cuts all meridians at a constant angle (but not a right angle). 2 (context nautical English) A line which crosses successive meridians at a constant angle, the path followed ...

WordNet Word definitions in WordNet
n. a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction [syn: rhumb line , rhumb ]